Glossary

Air carrier: Certificated provider of scheduled and nonscheduled services.

Chained dollars: A method to measure real changes in dollar values between years that uses chain-type indexes, rather than constant dollars. The method first calculates the real changes between adjacent years...

5-6 Transportation’s Share of U.S. Petroleum Use: 1975–2011

Excel

Note: Data for 2011 are preliminary. Data for 2010 are revised.

Source: U.S. Department of Energy, Energy Information Administration, Monthly Energy Review (Washington, DC: July 2012), tables 3.7a–c, available at http://www.eia.doe.gov/mer/petro.html...

5-5 U.S. Petroleum Production and Consumption: 1975–2011

Excel

Notes: Data for 2011 are preliminary. Data for 2010 are revised.

Source: U.S. Department of Energy, Energy Information Administration, Monthly Energy Review (Washington, DC: July 2012), tables 3.1 and 3.7c, available at http://www.eia.gov/totalenergy/data/monthly/...

5-4 Hybrid Vehicle Sales(a) in the United States: 1999–2011(c)

Excel

aSales include leased vehicles and fleet sales. bIncludes vehicles produced in Canada and Mexico.cCalendar year vehicle sales.

Notes: Data for 2009 are revised. The first domestic hybrid vehicle was not introduced in the U.S. market until 2004. A hybrid vehicle...

5-3 Passenger Car and Light Truck Fuel Economy Averages: 1990–2011

Excel

aData respecbefore 2007 are for passenger car and other 2-axle, 4-tire vehicles, tively. bBefore 1995, light duty vehicle, short wheel base (previously passenger car) fuel efficiency includes motorcycles. cData are unavailable for 2011.

Notes: Fuel economy is miles...

5-2 Index of Key Air Pollutant Emissions From U.S. Highway Transportation: 1990–2011

Excel

Key: PM-10 = airborne particulates of less than 10 microns; PM-2.5 = airborne particulates of less than 2.5 microns.

Notes: Not all graph scales are comparable. The indices are calculated using data on emissions from highway vehicles only. Particulate matters...

5-1 U.S. Greenhouse Gas Emissions From Energy Use: 1985–2011

Excel

Notes: Electric power sector emissions are distributed across sectors. Data for 2009 and 2010 are revised.

Source: U.S. Department of Energy, Energy Information Administration, Monthly Energy Review, Carbon Dioxide Emissions From Energy Consump- tion, tables 12...

5 Environmental Sustainability

While transportation enhances the quality of our lives, it also generates environmental impacts. Since 1980, most transportation-related air pollutant emissions have declined. This follows national mandates for more stringent vehicle emission standards, cleaner burning fuels, and greener...

4-17 Government Transportation Expenditures by Mode and Level of Government: 2000, 2007, 2008, 2009 (millions of current dollars)

Excel

4-16 Government Transportation Revenues by Mode and Level of Government: 2000, 2007, 2008, 2009 (millions of current dollars)

Excel